Solved command is not working

Hi, I am creating a plugin with a command called' /giveitem <item>'
but, it is not working
i do /giveitem iron_ore it does not work.
i do /giveitem minecraft:iron_ore it does not work.
here is my main class:

Code:

package me.hardboom.ultimate;
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import me.hardboom.ultimate.Gamerules;

import org.bukkit.event.*;
import org.bukkit.plugin.java.JavaPlugin;
public class Main extends JavaPlugin implements Listener {

    public void onEnable() {
        Bukkit.getServer().getConsoleSender().sendMessage(ChatColor.GREEN + "\n\nUltimate has been activated\n\n");
    Commands commands = new Commands();
   
    getCommand(commands.cmd1).setExecutor(commands);
    Gamerules gamerules = new Gamerules();
    gamerules.gamerules();
   
    }
    public void onDisable() {
    Bukkit.getServer().getConsoleSender().sendMessage(ChatColor.GREEN + "\n\nUltimate has been activated\n\n");
   
    }
       

    }

This is my Commands class

Code:

package me.hardboom.ultimate;

import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandExecutor;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.Listener;
import org.bukkit.inventory.Inventory;
import org.bukkit.inventory.ItemStack;

import net.md_5.bungee.api.ChatColor;


public class Commands  implements Listener, CommandExecutor {
   
    public String cmd1 = "giveitem";
        @Override
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
       
        if(sender instanceof Player) {
            if(cmd.getName().equalsIgnoreCase(cmd1)) {
                Material item = Material.getMaterial(args[0]);
                if(item != null){
                    Inventory inv = ((Player)sender).getInventory();
                    inv.addItem(new ItemStack(item, 1));
                    return true;
                }else {
                    sender.sendMessage(ChatColor.RED + args[0] + ChatColor.BLUE + " is not a valid item");
                }
               
           
        }else {
            sender.sendMessage(ChatColor.RED + "Only players can use this command");
            return true;
        }
    }
        return false;           
       
       
}
}
   

This is my gamerules class(Probably not relevant)

Code:

package me.hardboom.ultimate;

import me.hardboom.ultimate.Commands;
import org.bukkit.Bukkit;
import org.bukkit.command.*;
public class Gamerules {

    public void gamerules() {
        Bukkit.dispatchCommand(Bukkit.getConsoleSender(), "gamerule doDaylightCycle false");
        Bukkit.dispatchCommand(Bukkit.getConsoleSender(), "gamerule doWeatherCycle false");
        Commands commands = new Commands();
       
    }
   

}

here is my plugin.yml

Code:

name: Ultimate
version: 1.0
main: me.hardboom.ultimate.Main

commands:
   giveitem:
      usage: /<command>
      description: gives you an item
       

 

It says that its not a valid item

like i coded it to

@timtower

 

what is that?
The version for the plugin is 1.16.4
is that it?

 

still doesnt work
same thing

 

I'm sorry, I am relatively new to java and I do not understand, if you do not have time to explain, that is completely understandable
uppercase for the item after /giveitem?

IT WORKS
Thank you!
How do I mark this as solved?

EDIT by Moderator: merged posts, please use the edit button instead of double posting.